In the Kair Radial Ducting category you will find radial semi-rigid ducting systems, pipes, fittings and insulation to suit MVHR installations, heat recovery ductwork and high-performance domestic ventilation. Whether you need 75mm radial ducting, 90mm radial ducting, or specific branded lines like Domus radial ducting or Kair radial ducting MVHR, you’ll discover quality components here. Radial ducting is designed so that each room has its own radial duct run from a manifold to the MVHR or ventilation unit. This avoids long trunk runs and helps reduce noise and pressure loss. Many of the items here are semi-rigid radial ducting pipes, insulated radial ducting or radial ducting systems that are easy to cut, install and seal.

• Sizes & types: Ranges include 75mm radial ducting, 90mm radial ducting and optionally sizes like 69mm radial ducting. These allow you to choose based on required airflow and ceiling void size.
• Insulated & non-insulated radial ducts: Options such as insulated radial ducting or radial ducting insulation ensure that duct runs through unheated or exposed spaces retain thermal performance and avoid condensation.
• Compatible brands & systems: You’ll find Kair radial ducting,  compatible pipe and fittings so you can integrate into existing MVHR setups.
• Accessories & fittings: Ends, joiners, reducers, insulation sleeves and associated hardware to assemble a complete radial ducting layout that seals well and performs efficiently.

If you are considering “radial semi-rigid ducting” vs rigid or flexible options, the semi-rigid radial ducting used here gives a good balance between airflow efficiency and ease of handling. A well sized radial system (for example 75mm radial ducting) helps minimise airflow resistance and ensures quieter, more efficient performance. For installations where condensation is a concern or ducts pass through cold spaces, insulated radial ducting or radial ducting insulation ensures temperature stability. Whether you are replacing parts in an MVHR installation, building a new radial ducting system, or upgrading existing radial pipework, this category gives you the parts and sizes you need.